RAFIQUE M, YUSAF M. ?ACTIVATION OF FULLER’S EARTH OF D.G. KHAN WITH SULPHURIC ACID. Pakistan Journal of Scientific & Industrial Research [Internet]. 1996 Dec. 23 [cited 2024 Nov. 22];39(9-12):171-4. Available from: https://v2.pjsir.org/index.php/biological-sciences/article/view/2402